The E. coli strains of concern are the so-called enterotoxic (or enterotoxigenic) E. coli and the Shiga-toxin producing strains. Those are not commonly found in

The E. coli strains of concern are the so-called enterotoxic (or enterotoxigenic) E. coli and the Shiga-toxin producing strains. Those are not commonly found in peoples' guts and when they are, they cause... trouble. Enterotoxigenic Escherichia coli (ETEC) is a type of Escherichia coli and one of the leading bacterial causes of diarrhea in the developing world,[1] as well as the most common cause of travelers' diarrhea.[2] Insufficient data exists, but conservative estimates suggest that each year, about 157,000 deaths occur, mostly in children, from ETEC.[3][4][5] https://en.wikipedia.org/wiki/Enterotoxigenic_Escherichia_coli https://en.wikipedia.org/wiki/Enterotoxigenic_Escherichia_co... The most common sources for Shiga toxin are the bacteria S. dysenteriae and some serotypes of Escherichia coli (STEC), which includes serotypes O157:H7, and O104:H4.[4][5] Symptoms of Shiga toxin ingestion include abdominal pain as well as watery diarrhea. Severe life-threatening cases are characterized by hemorrhagic colitis (HC).[15] The toxin is associated with hemolytic-uremic syndrome. In contrast, Shigella species may also produce shigella enterotoxins, which are the cause of dysentery. https://en.wikipedia.org/wiki/Shiga_toxin https://en.wikipedia.org/wiki/Shiga_toxin